#!/usr/bin/env python
# -*- coding: utf-8 -*-

class PlaceHolder:
    def __init__(self):
        self.parent = None
        self.children = None
        pass
    
    def compute(self, rect):
        self.rect = rect
        pass
    
    def draw(self, window):
        pass
    
    def active(self):
        return False
    
    def focus(self):
        return None
    
    def blur(self):
        pass
